Neill was a personal friend of Benjamin Britten and played principal horn for the Aldeburgh Festival, taking part in the première and first recordings of the Church Parables Curlew River, The Burning Fiery Furnace and The Prodigal Son.
Sundance Film Festival | Cannes Film Festival | Toronto International Film Festival | Glastonbury Festival | Edinburgh Festival | Royal Festival Hall | Venice Film Festival | festival | Tribeca Film Festival | Salzburg Festival | Montreux Jazz Festival | Edinburgh Festival Fringe | Oregon Shakespeare Festival | Monterey Jazz Festival | film festival | Bayreuth Festival | Metro Manila Film Festival | Newport Jazz Festival | Locarno International Film Festival | International Film Festival of India | Festival of Britain | Glyndebourne Festival Opera | Coachella Valley Music and Arts Festival | Viña del Mar International Song Festival | Vancouver International Film Festival | Sanremo Music Festival | Aspen Music Festival and School | Tanglewood Music Festival | Fuji Rock Festival | European Youth Olympic Festival |
The choir performs mainly in Cambridge but has also appeared several times at Snape Maltings Concert Hall, Suffolk, including concerts at the Aldeburgh Festival and Britten's War Requiem at the Britten Festival; at major venues in London, including St Martin-in-the-Fields and St John's Smith Square; and at various concert venues in Europe.
He was in 1992 guest artistic director of the Aldeburgh Festival and from 1994–1998 artistic director of Tanglewood Festival of Contemporary Music.
He directed his wife, Nancy Evans, in the role of Lucretia in the 1946 premiere of Britten's opera The Rape of Lucretia at Glyndebourne, and later succeeded Peter Pears as director of the Aldeburgh Festival.
Current projects include a new piece commissioned by Los Angeles Philharmonic to be premiere at the Walt Disney Concert Hall in 2011, and an octet for members of the BBC Symphony Orchestra for broadcast on BBC Radio 3, and an other commission from the 2011 Aldeburgh Festival for the Barbirolli Quartet which will subsequently tour to the Verbier Festival, Switzerland.
The Io Passion premiered at the Snape Maltings as part of the Aldeburgh Festival on 11 June 2004 in a production directed by Stephen Langridge.